Method for utilizing an encrypted key as a key identifier in a d

Details Method for utilizing an encrypted key as a key identifier in a d Method for utilizing an encrypted key as a key identifier in a d

1989-06-28

1992-01-14

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 25, 380 29, 380 49, H04L 908, H04L 906

Patent

active

050816780

ABSTRACT:
The nodes in a computer network utilize an encrypted key as a key identifier in a data packets transferred between nodes which eliminates the need for a receiving node to perform a memory look up operation to ascertain the key used to encrypt the data. Each node is provided with a master key that is unique to each node. When two nodes want to establish communications they first negotiate a shared key. This shared key is then encrypted under each nodes' master key. The nodes then exchange their respective encrypted key. The encrypted key of the receiving node is placed in the data packet to be sent by the transmitting node. Upon receiving a data packet, the receiving node decrypts the encrypted key to determine the shared key. This shared key is then used to decrypt encrypted data in the data packet.

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patent: 4805216 (1989-07-01), Gruenberg
patent: 4887296 (1989-12-01), Horne
patent: 4888800 (1989-12-01), Marshall et al.

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